Experts say that the _______ of the world could be ... | GrammarQuiz.Net

[ Vocabulary ]

Experts say that the _______ of the world could be over 7 billion by the year 2015.

A. number

B. population

C. rate

D. quantity

Select your answer:

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The university will upgrade _________ computer information systems next month.

A. There
B. Their
C. It’s
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